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← ScienceWhich consequence results when turbulence prevents smooth flow in an aircraft's boundary layer?
A)Increased drag and decreased lift✓
B)Decreased drag and increased lift
C)Reduced heat transfer coefficient
D)Enhanced structural fatigue resistance
💡 Explanation
Increased drag and decreased lift occur because turbulent flow increases momentum transfer away from the surface, thickening the boundary layer and leading to pressure drag; therefore lift is reduced, rather than enhanced under unstable aerodynamic conditions.
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